Carbon fiber composite plate layering defect air coupling Lamb wave ultrasonic detection method based on modal decomposition imaging algorithm
A composite material board, air coupling technology, applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, complex mathematical operations, processing response signals of detection, etc., can solve problems such as secondary pollution, prolong service life and avoid secondary pollution Effects of pollution problems
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[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0061] An air-coupled Lamb wave ultrasonic detection method for delamination defects of carbon fiber composite material plates based on a modal decomposition imaging algorithm, the detection method comprises the following steps:
[0062] Step 1: Connect the device and debug;
[0063] Step 2: Process the signal detected based on Step 1 through modal decomposition;
[0064] Step 3: Feature extraction and analysis are performed on the instantaneous ...
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